Description

o-Toluenesulfonic Acid, Sodium Salt is the sodium salt derivative of ortho-toluenesulfonic acid, offering a stable and water-soluble alternative to the free acid. This compound serves as a versatile intermediate and catalyst in organic synthesis, valued for its consistent performance and ease of handling. It is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking reliable anionic surfactants or phase-transfer catalysts.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and fine chemicals.
• Catalyst & Reagent: Acts as an efficient acid catalyst or phase-transfer catalyst in various organic reactions, including esterifications and alkylations.
• Surfactant & Detergent Formulation: Employed as an anionic surfactant component in industrial and institutional cleaning products.
• Dye & Pigment Manufacturing: Serves as a solubilizing agent or intermediate in the production of dyes and organic pigments.
• Polymer Industry: Utilized as an emulsifier or polymerization aid in the production of specific resins and plastics.
• Agrochemical Synthesis: Functions as a building block or catalyst in the manufacture of herbicides, fungicides, and other crop protection agents.
• Electroplating Additives: Can be used in electroplating baths as a brightening agent or conductivity salt.
• Research & Development: A key reagent for academic and industrial R&D in synthetic organic chemistry.

Basic Information

Product Name	o-Toluenesulfonic Acid, Sodium Salt
CAS No.	15046-75-0
Molecular Formula	C7H7NaO3S
Molecular Weight	194.18 g/mol
Synonyms	Sodium o-Toluenesulfonate; Sodium 2-Methylbenzenesulfonate; 2-Toluenesulfonic Acid Sodium Salt; o-Toluene Sodium Sulfonate; Sodium Tosylate (o-isomer); Benzenesulfonic acid, 2-methyl-, sodium salt; 2-Methylbenzenesulfonic acid sodium salt; o-Methylbenzenesulfonic acid sodium salt
EINECS	239-112-5

Quality Control

Our o-Toluenesulfonic Acid, Sodium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and composition. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture, which can lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Sulfate (as SO4)	≤ 0.1%
Chloride (as Cl)	≤ 0.05%
pH (5% Solution)	6.0 - 8.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.